What is the main idea of the passage? The passage suggests that oxygen remained in the atmosphere because ______.

admin2005-01-30 65

问题 What is the main idea of the passage?
The passage suggests that oxygen remained in the atmosphere because ______.

选项 A、it was caused by outgassing
B、it was heavier than hydrogen
C、hydrogen became trapped in limestone
D、rays from the sun created equal amounts of hydrogen and oxygen ______.

答案B

解析

转载请注明原文地址:https://kaotiyun.com/show/RByO777K

托福（TOEFL）

相关试题推荐

Completethesummaryusingthelistofwords/phrases,A-H,below.ControversyaboutclimatescienceThereve
Peoplewhochallengetheevidenceofclimatechangehavegenerally
WhichofthefollowingviewsaboutlanguageareheldbyEvansandLevinson?
Completethesummaryusingthelistofwords/phrases,A-J,below.MeasurestoprotecttheoceansUptillthe
ClassifythefollowingcharacteristicsasrelatingtoASocialScienceBMedicalScienceCBothSocialScienceandMedicalScien
【31】Thespeakersuggestsostrichfarmsareprofitablebecause______.
Theuniversityhasproduceda______toinformstudentsaboutthedifferentaccommodationoptionsavailable.GrampianHalls
FIELDTRIPPLAN;WEATHER:everyoneneedswarmclothinganda【L6】________ACTIVITIEShiking—firstaidkit,mapanda【L7】____
Whichofthefollowingdoesthepassagemainlydiscuss?Theword"bound"inline9isclosestinmeaningto
(Inventor)ElishaGravesOtisdesignedthefirstelevator(thatitincorporated)anautomaticbrake,whichinturn(ledto)the

随机试题

车削加工是在车床上利用工件的()运动和刀具韵进给运动，加工出各种回转表面。
最先提出内—外向人格类型学说的心理学家是()
护理程序是以下列哪个理论作为其结构的最基本的框架（）
中国人甲与法国人乙在瑞士结婚并定居在瑞士。婚后因感情不和，甲回到中国提起离婚诉讼。依据《最高人民法院关于贯彻执行〈中华人民共和国民法通则〉若干问题的意见(试行)》，关于该案涉及的离婚以及因离婚而引起的财产分割的法律适用问题，下列哪些选项是正确的?
根据《中华人民共和国票据法》的规定，出票人签发()，银行应予以退票，并按票面金额处以5％但不低于1000元罚款。
会员制期货交易所1/4以上会员联名提议，应当召开临时会员大会。()
所有权和经营权高度集中于总部的连锁形式是()。
经营租出固定资产的折旧和出租无形资产的摊销均应计入其他业务成本。()
关于《教育法》立法特点说法正确的是()。
计算机的硬件主要包括:中央处理器(CPU)、存储器、输出设备和（）。

最新回复(0)

What is the main idea of the passage? The passage suggests that oxygen remained in the atmosphere because ______.

托福（TOEFL）

Completethesummaryusingthelistofwords/phrases,A-H,below.ControversyaboutclimatescienceThereve

Peoplewhochallengetheevidenceofclimatechangehavegenerally

WhichofthefollowingviewsaboutlanguageareheldbyEvansandLevinson?

Completethesummaryusingthelistofwords/phrases,A-J,below.MeasurestoprotecttheoceansUptillthe

ClassifythefollowingcharacteristicsasrelatingtoASocialScienceBMedicalScienceCBothSocialScienceandMedicalScien

【31】Thespeakersuggestsostrichfarmsareprofitablebecause______.

Theuniversityhasproduceda______toinformstudentsaboutthedifferentaccommodationoptionsavailable.GrampianHalls

FIELDTRIPPLAN;WEATHER:everyoneneedswarmclothinganda【L6】________ACTIVITIEShiking—firstaidkit,mapanda【L7】____

Whichofthefollowingdoesthepassagemainlydiscuss?Theword"bound"inline9isclosestinmeaningto

(Inventor)ElishaGravesOtisdesignedthefirstelevator(thatitincorporated)anautomaticbrake,whichinturn(ledto)the

车削加工是在车床上利用工件的()运动和刀具韵进给运动，加工出各种回转表面。

最先提出内—外向人格类型学说的心理学家是()

护理程序是以下列哪个理论作为其结构的最基本的框架（）

根据《中华人民共和国票据法》的规定，出票人签发()，银行应予以退票，并按票面金额处以5％但不低于1000元罚款。

会员制期货交易所1/4以上会员联名提议，应当召开临时会员大会。()

所有权和经营权高度集中于总部的连锁形式是()。

经营租出固定资产的折旧和出租无形资产的摊销均应计入其他业务成本。()

关于《教育法》立法特点说法正确的是()。

计算机的硬件主要包括:中央处理器(CPU)、存储器、输出设备和（）。

FIELDTRIPPLAN;WEATHER:everyoneneedswarmclothinganda【L6】____ACTIVITIEShiking—firstaidkit,mapanda【L7】